AEO vs SEO vs GEO: what is actually different?

A ranked list is positional. Ten results exist, you occupy one of them, and moving from four to two is a meaningful improvement. Competition is against everyone else on the page, and the page is the same page for everyone.

A written answer is compositional. The assistant gathers sources it treats as authoritative for that specific question and writes something from them. There is no position to hold. You are either in the composition or you are not, and the number of slots varies wildly by engine: Perplexity cites an average of 9.9 sources per answer, ChatGPT cites 1.8.

That difference has a practical consequence people miss. In a ranked list, being the fifth best answer still gets you on the page. In a two-source answer, being fifth gets you nothing at all. The strictest engines behave much closer to winner takes all, which is why a business can rank well and still be invisible.

Most of the job is shared, which is the practical reason not to buy these as separate services. Being crawlable, being indexed, loading quickly, being consistent about who you are, and being referenced by other sites all serve both outcomes.

Two things skew toward being quoted rather than ranked. The first is answer-shaped writing: one question per section, the answer in the first sentence, complete without the paragraphs around it. The second is entity consistency, because a model has to resolve your business to one thing before it will name it, where a search engine can rank a page without ever forming an opinion about who published it.

Neither of those costs you search position. They tend to help it. Which is why the sane approach is to do the work once, against a real list of buyer questions, and measure the result in both places.

The abstraction gets clearer with an example. Take a roofing company and the question "is hail damage worth filing an insurance claim for". Here is roughly how the same page differs depending on what it is built for.

Written for ranking. A long guide titled something like "Hail Damage Insurance Claims: The Complete Guide". It opens with context about hail season, covers the topic broadly, works the phrase in a few times, and is structured to keep a visitor on the page and moving toward a contact form. The answer to the actual question is in there, somewhere around the middle, as part of a longer argument.

Written to be quoted. The same expertise, restructured. A heading that is the question. The answer in the first sentence: a claim is usually worth filing when the repair estimate exceeds the deductible by enough to survive a premium increase, and here is the threshold that usually means in practice. Then the specifics, the exceptions, the number this company has seen across hundreds of claims. Every section standing alone.

The second version tends to rank perfectly well, which is the point. The reverse is not true: the first version rarely gets quoted, because there is no paragraph in it that survives being removed from the page.

So the practical difference is not what you know or even what you publish. It is structure and where the answer sits. That is a small change in method and a large change in outcome, and it is most of what separates answer engine optimization from what a good content team was already doing.

The acronym a vendor prefers tells you nothing about competence. What tells you something is whether they can describe the mechanism without reaching for jargon, and whether their answer to "what changes for my business" is about questions and answers rather than about scores and dashboards.

Two specific warning signs. Selling AEO and GEO as separate engagements with separate fees, since there is no work that belongs to one and not the other. And presenting a proprietary score as the deliverable, when the deliverable is supposed to be answers published where buyers and engines find them.

The other question worth asking regardless of terminology is what you keep if you leave. That answer is more revealing than any acronym.